// https://syzkaller.appspot.com/bug?id=01383b29d139cf9c9f9d9bd6e9947474ffe657a6
// autogenerated by syzkaller (https://github.com/google/syzkaller)

#define _GNU_SOURCE

#include <endian.h>
#include <sched.h>
#include <stdint.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <sys/syscall.h>
#include <sys/types.h>
#include <unistd.h>

#define USLEEP_FORKED_CHILD (3 * 50 * 1000)

static long handle_clone_ret(long ret)
{
  if (ret != 0) {
    return ret;
  }
  usleep(USLEEP_FORKED_CHILD);
  syscall(__NR_exit, 0);
  while (1) {
  }
}

static long syz_clone(volatile long flags, volatile long stack,
                      volatile long stack_len, volatile long ptid,
                      volatile long ctid, volatile long tls)
{
  long sp = (stack + stack_len) & ~15;
  long ret = (long)syscall(__NR_clone, flags & ~CLONE_VM, sp, ptid, ctid, tls);
  return handle_clone_ret(ret);
}

uint64_t r[1] = {0x0};

int main(void)
{
  syscall(__NR_mmap, /*addr=*/0x1ffff000ul, /*len=*/0x1000ul, /*prot=*/0ul,
          /*flags=*/0x32ul, /*fd=*/-1, /*offset=*/0ul);
  syscall(__NR_mmap, /*addr=*/0x20000000ul, /*len=*/0x1000000ul, /*prot=*/7ul,
          /*flags=*/0x32ul, /*fd=*/-1, /*offset=*/0ul);
  syscall(__NR_mmap, /*addr=*/0x21000000ul, /*len=*/0x1000ul, /*prot=*/0ul,
          /*flags=*/0x32ul, /*fd=*/-1, /*offset=*/0ul);
  intptr_t res = 0;
  syscall(__NR_mmap, /*addr=*/0x20000000ul, /*len=*/0xa000ul, /*prot=*/2ul,
          /*flags=*/0x2172ul, /*fd=*/-1, /*offset=*/0ul);
  syscall(__NR_mremap, /*addr=*/0x20005000ul, /*len=*/0x4000ul,
          /*newlen=*/0x1000ul, /*flags=*/0ul, /*newaddr=*/0x20003000ul);
  res = -1;
  res = syz_clone(/*flags=*/0, /*stack=*/0, /*stack_len=*/0, /*parentid=*/0,
                  /*childtid=*/0, /*tls=*/0);
  if (res != -1)
    r[0] = res;
  *(uint64_t*)0x20000340 = 0x20000240;
  *(uint64_t*)0x20000348 = 0xcd;
  *(uint64_t*)0x20000540 = 0x20000380;
  *(uint64_t*)0x20000548 = 0x7ffff000;
  syscall(__NR_process_vm_writev, /*pid=*/r[0], /*loc_vec=*/0x20000340ul,
          /*loc_vlen=*/1ul, /*rem_vec=*/0x20000540ul, /*rem_vlen=*/0x2d7ul,
          /*flags=*/0ul);
  return 0;
}